Integration of BigBlueButton

I need a SW developer who will integrate BigBlueButton (http://bigbluebutton.org/) into my existing management and educational platform.

My platform in written in PHP, using also other web technologies (javascript etc) and is built using MySQL.
The aim to offer a smooth solution for students to attend lessons online.
The brief process is as follows:

1. The teacher of a class should be able to create an online class by clicking a button.
2. The link will be visible to the students of this class.
3. Each student should be able to click the link and redirected to the online class.
4. The students already have accounts to get into their portal and they shouldn't need to sign up for additional accounts or get into any process which will confuse them. If accounts are needed the administrator of the portal should be able to create those for the students automatically, via the portal.
5. The portal has the names and the emails of the students and those should appear when students participate in the class.
6. The teacher should be able to upload teaching material and export the whiteboard at the end of the lesson.
7. The exported file should be saved automatically under the teaching resources of that class.

The development will be carried in our testing server where the developer will be given access.